Singing powerhouse Beyoncé Knowles' love for British high street label Topshop has been well documented. So it comes as no surprise that she's decided to take the relationship a step further with a 50-50 joint venture company, Parkwood Topshop Athletic Ltd., to produce an athletic streetwear brand.

The Topshop-Beyoncé collection will encompass clothing, footwear and accessories across for dance, fitness and sports. It will focus on both technical performance and ath-leisure, targeting women who do yoga or go the health club, as well as those who just want to look as if they do.

"This not a collaboration. This is about building a brand and building a business — a separate, proper business, with separate overhead and a separate office," Topshop owner Sir Philip Green told WWD in an interview Sunday.

"We have been looking at this category as fashion-inspired fitness develops, and know that this is right in our customers' heartland. Creating a partnership with Beyoncé, one of the most hard-working and talented people in the world, who spends many hours of her life dancing, rehearsing and training is a unique opportunity to develop this category." he added further.

The joint venture is an opportunity for the retailer’s edgy, out-there DNA to combine with Beyoncé’s penchant for va-va-voom attention grabbers, on or off the red carpet. Queen B said she would work with the product development team Topshop puts in place to "create and produce a technical and fashion-led collection" and "participate in all aspects of the partnership."

Topshop has a track record of collaborating with celebrities on clothing lines, most famously the model Kate Moss.

This is far from Beyoncé's first fashion business venture as well. She launched House of Deréon, a contemporary women's fashion line, with her mother in 2005 and founded Parkwood Entertainment in 2008. She was also named the face of international fashion retailer H&M in the summer of 2013 and has worked with Tommy Hilfiger on a range of fragrances.

The launch of the Topshop capsule collection is scheduled for fall 2015. It will be sold at Topshop outlets and Topshop.com.